Ions cannot cross myelin, so a myelinated axon undergoes action potentials only at:
a. nodes
b. junctions
c. sheathed areas
d. axon terminals
e. axon trigger zone
a
Biology & Microbiology
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Which of the following is not caused by a protozoan?
A. African sleeping sickness B. Cryptococcosis C. Both cryptosporidiosis and cryptococcosis D. Cryptosporidiosis
Biology & Microbiology
The two categories of stem cells in the human body are embryonic stem cells and adult stem cells. Therefore, stem cells can be found in
A. embryos, after division of the original zygote. B. skin cells. C. All of the answer choices are correct. D. adults, in several specialized tissues. E. the bone marrow.
Biology & Microbiology
As urine exits the body, it passes from the urinary bladder and out via the__________.
Fill in the blank(s) with correct word
Biology & Microbiology
omnivorous animals eat.
a. plants b. animals c. both plants and animals
Biology & Microbiology